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Home > GC > Chapter 8 > Lesson 8.1.4 > Problem 8-40

8-40.

Find the number of sides in a regular polygon if each interior angle has the following measures. Homework Help ✎

a. 60°

b. 156°

c. 90°

d. 140°

Refer to the Math Notes box in this lesson to help you find the correct equation to use.

180°(n − 2) = 60°n

n = 3

Follow the same steps used in part (a) to solve parts (b), (c), and (d).